Wrench



W. 0. LEE.

(No Model.)

WRENCH.

Patented Apr. 14, 1891.

3 1} @bbovwma said screw from contact with said shank, sub- UNITED STATES PATENT OFFICE.

\VILLIAM 0. LEE, OF DETROIT, MICHIGAN.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 450,516, dated April 14, 1891.

Application filed November 20, 1890' $erial No. 372,018. (No model- This invention pertains to a new and im-' proved wrench, having for its object the production of simple and highly efficientmeaus for securing the reversible stationary jaw, and also means for readily and easily effecting the adjustment of the movable or sliding jaw.

The invention comprises in a combined nut and pipe wrench a shank having a rigid reversible jaw, an end cap and screw for holding said jaw, and a sliding adjustable jaw having a screw and a slide for disengaging stantially as hereinafter fully set forth,-and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of my improved wrench. Fig. 2 is a longitudinal sectional view thereof. Fig. 3 is a view of the parts of the movable jaw detached. Fig. 4 is a horizontal sectional view of the end of the shank, taken through the reversible jaw.

Referring to the drawings, A designates the shank, and a the handle, the same being preferably made of one piece of hollow metal. In the upper surface of this shank is formed a disconnected or segmental screw-thread a, and the outer end of this shank is formed into a projection or extension a having at its inner end tapered orinclined sides a ending at the sides of the shank.

B is the stationary reversible jaw, having a central opening I), the side walls of which are V-shaped, their vertexes being at central opposite points. The inner opposite taper of the sides of this opening is designed to correspond with the tapering sides of the extension of shank A, upon which the jaw is firmly held by an end cap 0, provided with inwardly-projecting wings b b, the outer sides of which taper so as to fitfiush against the corresponding tapering sides of the opening B. These wings hug the extreme end of the extension a and the cap 0 is firmly held in place by a screw D, passed therethrough and working in a threaded aperture in the end of the shank, said screw havingamilled head (Z to permit of its ready manipulation. One face of this jaw is curved and provided with a series of transverse teeth d, which are used when the wrench is employed for turning pipes, rods, or bolts. In the other end of this jaw are formed two V-shaped grooves or recesses (1 by means of which the wrench is always applicable for turning nuts. The reversal of the jaw B is readily effected by first removing the screw D and cap C, which are replaced when the jaw is again inserted on the end of the shank, the arrangement of the tapered end of the shank, the opening of the jaw B, and the wings of the removable cap being such that said jaw is firmly held in place in both positions.

E is the sliding adjustable jaw having an opening through which the shank is extended, and its rear portion is preferably made in skeleton form andis provided with two upwardlyprojecting hollow extensions 8 6, having circular grooves or recesses 6 F is the rotating screw projecting through an upper openingf of the jaw, and its thread is designed to engage the screw-thread a of shank A, The screw F is provided at its ends with beveled or inclined extensionsff of cone shape, which are designed to be located in and inclosed by the hollow extensions 6 e of the jaw. Upon the reduced ends f of these beveled extensions are designed to bear yokes orsaddlesf of approximately U shape, said yokes or saddles beingheld to their place by spiral springs f encircling studs or short extensions f of said yokes located in the grooves or recesses e These springs and yokes hold the screw F normally in engagement with the thread of the wrench'shank, and by turning the exposed portion of said screw a slow adjustment of the jaw E can be secured.

G is a slide for bodily disengaging the screw F from contact with shank A, whereby a quick adjustment of the jaw E can be had. This slide consists of an oblong frame g, having inwardly-tapering side bars 9, connecting end barsr and a projected end g, having a thumb-piece g bentat right angles and parallel with the end of jaw E.

Upon the end bars g are formed inclined or tapered lugs g 9, designed to engage the beveled or inclined extensions of the screw F. In their normal position the reduced ends of the screw rest upon these lugs, one of which g is provided with a groove or recess 4 for the end of the extension f the taper of the other extensionf conforming to that of lug g. By pushing inwardly on the slide G the tapered lugs thereof will by contact with the beveled extensions of the screw force the latter outward from contact with the shank as against the action of the spring-pressed yokes or saddles, the screw being permitted to so move by reason of two slots g in the hollow extensions 6 e through which the beveled portions extend. As soon as pressure is removed from the slide the springs will force the screw into contact with the wrench-shank and cause the rearward movement of the slide. Thus it. will be seen that a slow movement of the adjustable jaw can be secured by turning the screw with the thumb or finger and that a rapid or quick adjustment is obtained by the slide, which disengages the screw from the thread on the shank and permits the easy manipulation of said jaw.

The advantages of my invention will be apparent to those skilled in the art to which it appertains, and it will be particularly observed that the same comprises a combined nut and pipe wrench capable of being easily transposed, and that the sliding jaw is readily and quickly adjusted and can be firmly held at any point. The invention is also extremely simple, inexpensive, and free from complication.

I claim as my invention 1. In a wrench, the combination, with the shank having a tapering end and the adjustable jaw, of the rigid reversible jaw provided with an opening the walls of which are V- shaped or divergent, and the securing end cap having wings conforming to said walls, whereby said jaw is rigidly secured on said shank and is rendered reversible, substantially as opposite V-shaped or divergent side walls, the

end cap provided with tapering wings hugging the sides of said extension and fitting the outer ends of said V-shaped or divergent walls, and the screw for securing said cap in place, engaging a threaded aperture of said shank, substantially as set forth.

3. In a wrench, the combination, with the shank having a screw-thread, of the sliding adjustable jaw herein described, the screw located in said jaw and engaging said screwthread, the springs bearing on said screw, and the slide for raising said screw at both ends, whereby the same is disengaged from said screw-thread, substantially as set'forth.

4. In a wrench, the combination, with the shank having a screw-thread, of the sliding adjustable jaw herein described, the screw located in said jaw and engaging said screwthread and having beveled or inclined extensions at its ends, and the slide having inclined lugs engaging said extensions, substantially as set forth.

5. In a wrench, the combination, with the shank having a screw-thread, of the sliding adjustable jaw herein described, having hollow extensions and opposite slots, the screw located in said jaw and having beveled or inclined extensions and reduced ends, the spring-pressed yokes or saddles en gaging said reduced ends and located in said hollow extensions, and the slide having inclined lugs engaging said extensions and provided with a thumb-piece,substantially asset forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM 0. LEE.

W i tn essesr N. L. KonNIo, tlxo. N. MCGILL. 

